Bed and cylinder printing press



Nov. 24,1925.

F. T. LEILICH BED AND CYLINDER PRINTING PRESS I Filed Dec. 13 1 25 INVENTOR '1. LEILICI-l', OF SAN FRANCISCO, CALIFORNIA.

BED AND CYLENDEB. PRIJSTTfNG PREES.

Application filed December 13, 1928. Serial No. 880,373.

1 0 aZZ 10710121 it may concern Know ye that 1, Farmers T. LEILICH, a citizen of the United States, and a resident of the city and county of San Francisco and State of California, have invented a new and useful Improvement in Bed and Cylinder Printing Presses, of which the following description and accompanying drawings are a complete specification.

My invention relates to that class of print ing presses in which a flat type bed is re ciprocated beneath a rotated impression cylinder, the latter being lifted at times to permit the bed to return on the non-printing stroke.

In the operation of presses of the foregoing character it is frequently necessary to adjust the impression cylinder to or from the type form, which is done in all presses within my knowledge by changing the length of the impression rods, usually four, with two adjusting nuts to each.

This adjustment is very troublesome to make, the adjusting nuts generally being in a position difficult of access, there is also no way of determining the precise amount of adjustment, or change made in the length of each of the four impression rods either separately, or with respect to the other rods, much time is therefore consumed in making repeated adjustments and trying the effect, the press meanwhile standing idle, thereby increasing the cost of the product.

My object in this invention is to provide means by which the impression cylinder may be adjusted to or from the form easily, quicjtly and with certainty, and the extent of the adjustment instantly indicatec to such a degree of minuteness as may be desired, and as is now not possible.

In the drawings Fig. 1, is a side elevation. Fig. 2, is a side elevation, on a larger scale to show certain parts more clearly. Fig. 3, is a vertical cross section on line A, in Fig. 92, viewed in the direction of the arrow.

In the drawings 1 is part of one of the side frames of a printing press, 2, 2 are the columns between which the impression cylinder shaft bearings 33, 3 are vertically movable, l: is the impression cylinder, 1 is the shaft upon which it is rigidly secured, 5,

5 are the impression rods which pass throughthe bearings 3, 3 for clamping them firmly together, 6 is an impression bar through which the lower ends of the impression rods pass. In the usual construction of printing presses of like character the adjustment of the cylinder with respect to the type surface is accomplished by shortening or lengthening the impression rods, whereas in my invention the said rods 5, 5 are unadjustable, the shaft bearings 3, 3 and impression bars 6 being always maintained in a fixed position between the respective nuts at the ends of each rod and against shoulders formed thereon. In a seat formed in the upper surface of the impression bar 6 is the lower member 7 of a toggle joint, in the upper part of the latter member is formed a seat for the upper member 8 of the toggle joint, the latter member is, in turn, seated in the under side of an adjustment block 9.

The member 8 is provided, at its opposite end, with an arm 10, to which is pivotally attached a connection 11 operated by any suitable mechanism.

To the impression rods 5, 5 respectively, are attached the guides 12, 12 by which the adjustment block 9 is prevented from any possible lateral displacement without interfering with its free vertical movement. A semicircular bearing 1 is formed in the frame 1 transversely thereto in which is seated an adjusting member 13 provided with a curved surface 14, which may be formed integrally with the member 13 or rigidly fixed thereon, the curved surface being an arc the center of which 14 is eccentric to the centre of the member 13 as seen in Fig. 2.

The adjustment block 9 is formed with a seat 9 corresponding in curvature with that of the surface 1 1, in Fig. 2 the eccentricity of the latter surface being greatly in excess of requirements in actual practice and is so shown tov more clearly illustrate it.

In Fig. 2 is shown a connection 241 pivotally attached to the member 8, at one end, and at the other end to a suitable fixed part, as an alternative means for preventing the displacement of the adjustment block 9.

The respective members 7, 8, 9 and 13 ere tend across the frame 1 as shown in. Fig.

Rigidly secured upon the adjusting member 13 is a sector 15 geared at its periphery with a worm 16 fixed upon a shaft 17 mounted in suitable bearings, secured upon one end of the shaft 1'? is a micrometer adjusting wheel 19 by which the latter is turned in its bearings to move the sector 15. For the purpose of illustration the range of adjustment of the curved surface 141- is ten one llil hundredths of an inch, the sector is graduated into ten divisions and ordinated from O to each space representing a movement of one hundredth of an inch of the sur-- face 14, the pitch of the worm and sector teeth being such that one turn of the micrometer wheel advances the sector one graduation.

The hub of the micrometer wheel 19 is graduated into ten divisions each one of which indicates a movement of one tenth of a division of the sector 13, or of a movement one thousandth of an inch of the said surface le and through the connecting mem ber a like amount of movement to the impression cylinder, the adjustment of the sector 10 and micrometer wheel 19 being shown instantly by suitable indicators fixed on the bearings as seen in Fig. 1.

The stops 21, 22, limit the movement of the sector in each direction, the spring 23, shown in Fig. 1 is one of those usual for lifting the impression cylinder. It is to be understood that the before described mecha nism and illustrated in the drawings is in duplicate, for each side of the press, therefore no further illustration is required. As to the best of my knowledge I am the first to provide a means by which the cylinder of a printing press may be easily and quickly moved to or from the type surface and the amount of such movement indicated instantly to as minute a degree as may be required I therefore claim it broadly.

I claim- 1. In a printing press in which an impression cylinder is reciprocated by suitable mechanism, the combination of manually operated means for adjusting theposition of the cylinder independently of the reciprocating mechanism, which includes an adjusting member provided with a curved surface and an adjustment block interposed between said mechanism and the latter element, and means for indicating the extent of the ad j u sti'uent.

2' ln a printing press in which an impression cylinder movably mounted in'bearings is reciprocated by suitable mechanism which includes impression bars, impression rods passing throughthe bearings for clamping the latter rigidly together and for holding the impression bars a fixed distance from the bearings, the combination of manually operated means for adjusting the position of said cylinder relative to the type surface and independently of the reciprocating mechanism, which include an adjusting member provided with a curved surface and an adjustment block.

3. In a printing press in which an impression cylinder is reciprocated by suitable mechanism the combination of manually operated means for adjusting the cylinder independently of the reciprocating mechanism the and for indicating the extent of the adjustment which include a graduated sector, a worm gear operatively engaged therewith, a shaft upon which the worm is fixed, a graduated micrometer wheel. firmly secured upon the shaft, and indicators suitably positioned to show on the said sector and micrometer wheel respectively the extent of the adjustment.

l. An. impression cylinder, a shaft upon which itis rigidly secured, bearings for the shaft, a frame in which the bearings are vertically movable, impression bars, impression rods for clamping the bearings rigidly to gether and for holding the impression bars at a fixed distance from the bearings, an ad justing member partially rotatable in a seat formed in the frame, an element rigidly secured to the adjusting member, an adjustment block in constant contact with said ele ment, a geared sector fixed to the adjusting member and suitably graduated, a worm op eratively engaged with the sector, a shaft upon which the worm is rigidly secured, a micrometer wheel firmly secured upon one end of the shaft, and suitably graduated, indicators for showing on said sector and micrometer wheel respectively the extent of the adjustment, whereby the impression cylinder may be adjusted, relative to the type surface.

5. In a printing press in which an impression cylinder, movably mounted in a frame,-

is reciprocated by suitable mechanism, combination of means for adj usting the position of the cylinder independently of the reciprocating mechanism, which include an adjustable member partially rotatable in a seat formed in the frame, an element rigidly secured to said member having a curved surface the radial centre of which is eccentric to the centre of said member, an adjustment block shaped on itsupper surface to conform to the surface of said element, and coordinated members by which the adjusting member may be manually turned in its seat, and the said element, secured thereto, caused to depress the said ad justment block, within defined limits, and i thereby to change the position of the impression cylinder independently of the said reciprocating mechanism.

6. In a printing press in which an impression cylinder, movably mounted in bearings, is reciprocated by suitable mechanism which includes impression bars, and impression rods for clamping the bearings together and holding the impression bars at a fixed distance from the bearings, the combination of manually operated means for adjusting the position of the cylinder independently of the mechanism for reciprocating it which include a geared sector graduated and numbered to indicate the extent of the adjustment by the one hundredth of an inch, a

worm geared to the'sector and rigidly fixed upon a shaft, and a micrometer wheel firmly secured upon the shaft and graduated and numbered to indicate a movement of one thousandth of an inch of the vertical adjustment of the impression cylinder and pointers suitably positioned to register on said sector and micrometer wheel. the extent of the adjustment.

7. In a printing press in which an impression cylinder is reciprocated by suitable mechanism which includes impression rods through which the strain of the impression is transmitted, the combination of manually operated means, interposed between the frame of the press and said mechanism, for adjusting the position of the cylinder independently of the mechanism for reciprocating it said means including a horizontal semicircular seatformed within the frame transversely thereto and an adjusting member movable in said seat and constrained from lateral movement.

San Francisco, Calif., Dec. 8th, 1923.

FRANCIS T. LEILICH. 

